LOINCActiveBoth

LOINC Code 43402-7: Erythrocyte 15 minute reading (Bld) [Sedimentation Rate]

43402-7 is a LOINC code used to identify Erythrocyte 15 minute reading (Bld) [Sedimentation Rate] in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Erythrocyte. It is commonly used with the system or sample type Bld.

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Erythrocyte. It is commonly used with the system or sample type Bld.

When is it used?

  • Used in lab systems, EHRs, and clinical data exchange.
  • May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
  • Status: ACTIVE
  • Order vs observation: Both
  • Method: 15M reading

What it does not mean

  • The code identifies the observation or test, not the actual result.

Key facts

  • Erythrocyte [Sedimentation Rate] in Blood by 15 minute reading
  • Erythrocyte
  • Blood; Discocyte; Erc; Erythrocytes; HEMATOLOGY/CELL COUNTS; Point in time; QNT; Quan; Quant; Quantitative; Random; RBC; Red blood cell; Red blood cells; Red blood corpuscle; Red blood corpusles; Red cell; Red cells; Sed Rat; WB; Whole blood

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

Erythrocyte 15 minute reading (Bld) [Sedimentation Rate]Erythrocyte [Sedimentation Rate] in Blood by 15 minute readingErythrocyte Sed Rat Bld 15MErythrocyteHEM/BCRed Blood Cell (RBC), BloodSedimentation Rate

Frequently asked questions

Code details

Code43402-7
SystemLOINC
Display nameErythrocyte 15 minute reading (Bld) [Sedimentation Rate]
DescriptionErythrocyte
Short nameErythrocyte Sed Rat Bld 15M
ComponentErythrocyte
PropertySedimentation Rate
TimingPt
System (specimen)Bld
ScaleQn
Method15M reading
ClassHEM/BC
Example unitsmm/15 min
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.17
Last changed2.81

Consumer names

Red Blood Cell (RBC), Blood

Part names

ErythrocyteSedimentation RatePtBldQn15M readingPoint in time (spot)Blood15 minute reading

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.